How to put on soft contact lenses correctly. How to use contact lenses correctly

Just a few decades ago, people with poor vision were forced to wear massive glasses with wide frames. Some, however, might not do this - they didn’t want to spoil appearance. Then they had to not notice a lot, not recognize people, not distinguish between inscriptions and small objects. Today for visually impaired people there are great alternative correcting your vision and not wearing glasses is contact lenses.

Contact lenses are currently used daily by millions of people. They are able to correct vision quickly, safely, naturally. Additionally, there are colored lenses that can completely transform your look. But for contact lenses to bring only satisfaction, they need to be put on and taken off correctly, properly cared for, changed and cleaned on time. Over time, this will become a habit - people who wear lenses for years no longer notice all these manipulations. If you decide to try on lenses for the first time, you need to know a few important rules.

How to put on lenses

As a rule, the first fitting of lenses takes place under the supervision of a specialist, which is available in any optician. The doctor will tell you and show you how to put on the lenses and how to care for them. If you have to do this for the first time at home, don’t despair. Our recommendations will help you learn how to put on and remove lenses yourself.

  1. First you need to wash your hands. Since you touch the lenses with your hands and also come into contact with the mucous membrane of the eye, this is very important.
  2. If you are putting on lenses for the first time, make it a habit to always start with one eye, for example, the right one. You can avoid confusion later. By the way, the lenses do not need to be swapped, even if both have the same diopters.
  3. So, we opened the container, picked up the tweezers and carefully grabbed the edge of the lens. They took it out of the liquid and looked at the light. This should be done every time - you check it for microcracks, tears and cuts. Even the smallest speck of dust on the lens can cause discomfort to the eyes.
  4. If the lens is intact, carefully place it on the pad of your finger. Do this so that the lens rests only with its base, and its edges are raised. The pad should have a sort of plate with the sides raised up.
  5. After this, you need to check whether the lens has turned out. If she is in correct position, its edges will be directed upwards. If the lens is turned out, the edges will look to the sides, the lens itself will take the shape of a flat plate. In this case, the lens must be carefully unscrewed using tweezers.
  6. When the finished lens was on your finger right hand, you need to open your eye and carefully hold the lower eyelid with the open finger of your left hand. You can also hold upper eyelid, but some do without it.
  7. After this, apply the lens directly to the eye. Like a wet suction cup, it will immediately stick to the mucous membrane of your eye. Then lower your eyelid and close your eye. Slowly lower your pupil down.
  8. Blink your eyes gently until the lens finally snaps into place. The lens and pupil have the same shape, so it rarely moves from its proper place. If you notice an improvement in your vision, the lens is in place.
  9. If for some reason you feel pain, stinging, or a feeling of a foreign object in the eye, make several movements with your fingers from outer corner eye to the inner. The lens will come out this way, you will need to rinse it in liquid and after some time (when the eye calms down and the redness subsides) try to put it on again.

For the first time, you can wear lenses for no more than three hours. Subsequently, this time can be increased. But even if you wear lenses for many years, they must be removed before going to bed. The fact is that the lens restricts the passage of oxygen to eyeball, you need to give your eyes time to rest.

How to remove lenses

Removing the lens is a little easier than putting them on. Also be sure to wash your hands before removing. After this, open your eye and fix both open eyelids with two fingers of your left hand. Using the finger of your right hand, carefully slide the lens away from the pupil and onto the sclera. After this, the lens will lose its shape and gather in the corner of the eye, like a rag. You just need to remove it with two fingers. The lens is placed in a special container with liquid until the next day.

At proper care lenses serve a person for a long time, do not tear or deteriorate.

  1. Lens fluid needs to be changed every day, as a last resort- once every three days. This keeps your lenses clean and therefore your eyes healthy.
  2. Once every few weeks, the lenses can be cleaned with special tablets. They need to be crushed, diluted in water and the lenses dipped into this water. Special composition These tablets allow you to break down microscopic particles of protein that settle on the lenses through contact with the mucous membrane of the eye. Cleaning tablets, just like lens liquid, are sold together with lenses in optics.
  3. Contact lenses have an expiration date. Some can only be worn for one day, others for 4 months. Whatever the lenses, do not exceed the permissible period of wearing the lenses. If it says it’s time to change your lenses, do so. Even without visible damage the lenses become unusable - a feeling of discomfort, pain, pain, and watery eyes appears.
  4. Contact lenses should not be worn during colds– after this it is advisable to replace them with new ones or clean them thoroughly. In addition, lenses should not be worn while taking antibiotics.
  5. If microscopic contamination appears on the lens, it needs to be cleaned. It's not difficult to do, you just need to be very careful. Place a few drops of lens fluid on your palm. Place a lens in this drop. Gently wipe the wet lens on your palm with your finger. After this, rinse it in clean water container for lenses.
  6. You can use this method to remove small specks from the lens. Fold the lens in half and carefully hold it between two fingers and move it with the pads. The two halves of one lens should seem to rub against each other. After this, do not forget to rinse the lens.
  7. If you have sensitive eyes, you should use special moisturizing eye drops throughout the day. In summer, when the mucous membrane of the eye often dries out, drops should be used by everyone who wears contact lenses.
  8. If a scratch, tear or crack is found on the lens, change it; you will not be able to wear such a lens.
  9. Sometimes it happens that the lens breaks or breaks due to improper handling. In this case, it is not necessary to change a pair of lenses at once - buy only one piece.
  10. Never use for cleaning or storing lenses. plain water. After being in such water, the lens becomes unsuitable for subsequent wear.
  11. If this is your first time removing your lenses and you just can’t do it, put moisturizing drops in your eyes. When the mucous membrane is saturated with moisture, friction will be less and removing the lens will not be difficult.
  12. If you wear contact lenses, do not wear them to the cosmetologist for a facial steaming procedure. In addition, there is no need to swim in water with with open eyes– you risk losing your lenses.
  13. Many people are interested in what to do if the lens is put on inside out? It doesn't do any harm. However, if the lens is put on the other way around, it will be less firmly fixed on the pupil, and you may simply lose it.
  14. Sometimes it happens that the lens falls off when putting it on. Because it is transparent and very thin, it is very, very difficult to find. To avoid this, you need to wear lenses over a table that is not on foreign objects. When looking for a lens, don't forget to look through your clothes - they often get stuck on the sleeves or chest.

By following these simple rules, you will be able to introduce contact lenses into your life so much that you will no longer want to give them up.

Contact lenses are a real salvation for those who do not want to wear glasses. Many people complain that contact lenses do not suit them - their eyes hurt, their vision becomes blurry. In fact, correctly selected lenses are very rarely incompatible with the mucosa. By following all our recommendations, you will be able to wear lenses with great pleasure!

Video: how to put on and remove contact lenses

Increasingly popular among those who have vision problems. Thanks to a number of advantages over glasses, they not only provide the necessary vision correction, but also get rid of complexes, being invisible to others. They broaden their horizons by opening up peripheral vision. Therefore, it is important to know how to put on lenses correctly. Especially those who are doing it for the first time.

Preparing for the donning process

Before putting on your lenses, prepare for the process. To put them on without problems, you will need:

  • mirror;
  • solution for their treatment;
  • moisturizing eye drops.

When starting the procedure, you must wash your hands (1) with soap. Moreover, rinse the latter thoroughly, since if it gets into the eye, it will cause discomfort.

It is advisable to dry your hands with a paper towel (2) so as not to leave fabric lint on your fingers. And for the first time, you can give your hands the opportunity to dry naturally. Small fibers are almost invisible, but can cause discomfort if they get on contact lenses or in the eye when put on.

If you are trying to put on such eyepieces for the first time, it is better to cut your nails short, since without lack of experience you can accidentally injure your eye or tear the fragile lens.

When you remove them, repeat all the preparations.

How to put on contact lenses?

To put them on correctly, perform the following manipulations:


Once you're done with the first eye, move on to the second. Repeat the same steps in the same order, inserting the lens correctly into the left eye. Then use drops to moisturize, as your eyes may experience slight dryness after the procedure.

During repeated and subsequent procedures, check the eyepieces for large scratches, tears or other damage. A damaged pair must be replaced immediately and discontinued use.

There are special tongs in the form of plastic tweezers that make it easier to remove from the container. They can be used to straighten the lens before putting it on. Nippers are useful for those whose long nails make this procedure difficult. They reduce the risk of damage to soft eyepieces.

How to remove contact lenses?

You should also remove eyepieces while sitting, next to the mirror. This way, if they accidentally fall onto the table surface, you can easily find them. No need to worry about how to remove your lenses. In fact, it's even easier than putting it on.

Open your right eye wide, holding your eyelids in the same way as you did when putting it on. Using the pinch method, hook the lens with your index finger and thumb. Place it in a container. Gently spread into the solution.

Now you can remove the second one in the same way.

Make sure there is enough liquid in the container to completely cover the lenses. IN otherwise they may dry out.

Please note that you need to remove your lenses after you have washed your face and removed your eye makeup. And, by the way, only put it on before applying it.

Taking care of your lenses

Now you know how to remove your lenses and put them on. Let's see how to properly store and handle contact lenses.

First of all - cleanliness. It is necessary to periodically wash the container with soap and warm water, rinsing it well. Can be used additionally by special means for the cleaning.

It is better to change a solution specifically designed for treating lenses daily, as dust particles, lint and protein deposits accumulate in it. Lack of hygiene can cause conjunctivitis or other inflammatory processes, and will also shorten the life of the eyepieces.

If the lenses are heavily soiled, you should gently rub them in the solution with your fingertips, and then rinse, replacing the special liquid. They cannot be washed under water; they are not suitable for this. It is also necessary to remove lenses when bathing and swimming.

Eyepieces are stored for as long as their service life allows. So, disposable ones should be thrown away immediately.

You should not sleep in lenses. Take them off before going to bed to give your eyes a rest. Disinfection in solution takes at least four hours. The time while you sleep is ideal for cleansing.

Currently, the number of people with vision problems requiring constant optical correction, or, more simply put, wearing glasses, is steadily growing. Someone has it age-related changes optical media of the eye, some have had it since childhood poor eyesight, and for some people this was the result of illness or injury, or professional activity.

If you don't have contact lens contact, you may be tempted to rinse your lenses with tap water. Water sometimes contains germs that can cause serious eye infections. Avoid even contact with skin in the shower. And never put your lenses in your mouth or use saliva to wet them.

Clean your lens barrel as thoroughly as you clean your lenses. You have to rinse it by at least, every night with a disinfectant solution. Wipe the case with a cloth and let it air dry to get rid of lingering bacteria. Replace your case every 3 months or more often.

Whatever the cause of visual impairment, it requires correction, since it is thanks to visual analyzer we receive up to 80% of the information about the world around us. A fuzzy, cloudy image will significantly limit your work and everyday life. But not everyone is ready to wear glasses, and some find them completely uncomfortable or simply tired of them after many years. Then excellent option You will be wearing contact lenses, a vision correction device that is placed directly on the eye.

Features of wearing eye lenses

The lens may feel uncomfortable if there is something on or under it, or if it comes out. Remove the lens and rinse it with rewetting drops or a non-peroxide solution to remove dirt or dust. Do not wear contact lenses if they remain uncomfortable. And don't wear them when your eyes are already red and irritated. If you don't feel better after you stop wearing them, see your eye doctor.

Mature teens can wear contacts while they are learning how to care for them, and they can be trusted to follow all care instructions exactly. Disposable lenses that are only worn for 1 day are a good option. There is no cleaning or maintenance. Work with your eye doctor to find the best contacts for you. Never use a friend's lenses. Your eye doctor should be able to fit your contact lenses perfectly for your eyes. Your doctor may give you samples to make sure the lenses you choose are a good fit.

Types of contact lenses

Today, contact lenses are divided into two large groups - soft and hard, and hard ones are divided into gas-permeable, allowing access of oxygen to the tissues of the eye, and gas-tight (today they are almost not used, they have many disadvantages when worn). Soft contact lenses come in silicone hydrogel and simply hydrogel. They can have low or high moisture content, which is important when wearing and caring for the products.

Avoid metallic or glittery eye shadows and liners, as well as lash-based or waterproof mascara. May irritate or stain your lenses. Don't apply eyeliner to your inner rims, between your eyelashes and your eye. Replace your eye makeup at least every 3 months.

  • Wear soft contact lenses before applying makeup.
  • Put on gas permeable lenses after you put on your makeup.
  • Always remove your contact lenses before removing your makeup.
  • Use non-allergenic makeup.
You can wear contacts for most sports and activities.

Lens sizes are divided into three classes:

  • scleral, they cover the entire eye, in addition to the pupil and iris, also part of the sclera;
  • corneoscleral (cover the cornea and a small part of the white membrane of the eye)
  • corneal (cover only the cornea).

The lenses required for your type of visual impairment should be selected by your ophthalmologist at your appointment. If these are corneal lenses, they are usually rigid, are not very common today and are suitable for special visual impairments. The most common lenses today are corneoscleral lenses - these are traditional soft contact lenses.

Plus, they don't fog up like glasses and they give you better peripheral vision. If you swim, however, especially in lakes, avoid wearing your contacts in the water. Even with waterproof glasses you can get eye infection out of the water, and your lenses may be difficult to remove if they get wet. If you accidentally wear them in water, use salty or waterlogged drops to loosen them, then clean and disinfect them.

Decorative and cosmetic lenses

Even after you get contact lenses, you will probably still wear glasses from time to time. You should keep a pair of modern prescription glasses for when your eyes need a break or if you can't wear your contacts for some reason. This can look cool if you have cat eyes for Halloween or change the eye color just for fun. Decorative and cosmetic lenses can be safe, but make sure you get them from your eye doctor. Ill-fitting contact lenses can scratch your eye or cause an eye infection.

In addition to these lenses, there are also carnival, cosmetic lenses, and therapeutic lenses necessary for the treatment of certain pathologies and injuries and burns of the eyes.

Teens and young adults spend hours in front of computers, televisions and cell phones. All this screen time can cause problems with computer vision and eye strain. We blink less when we focus so close, so our eyes can become dry and tired. Every 20 minutes, move away from the screen for 20 seconds to watch something 20 feet away.

If you are considering contact lenses, consult your eye doctor first. Contacts come in a variety of materials, shapes and strengths that do not match your glasses prescription. An optometrist or ophthalmologist can find the right prescription and fit lenses for your eyes. Even if you want to buy contact lenses online, you still need to see your eye doctor first.

What do you need when choosing lenses?

First of all, in addition to selecting the lenses themselves according to all the main characteristics, it is also important from the very first day to make sure that you always have lens care products at hand. To wear lenses comfortably and safely, you need to learn how to quickly put them on and take them off, as well as how to properly handle and store them. Even with minor violations techniques for their storage and use, products may be damaged, which will lead to infections, injuries and damage to the eyes, which can significantly impair vision and cause purulent-inflammatory complications.

It is intended for general information purposes only and does not take into account individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied upon to make decisions about your health. If you think you may have an emergency health care, call your doctor or dial immediately.

Cleaning and storing contact lenses

Step 1: Place the contact lenses in the palm of your hand and apply a few drops of the recommended contact lens solution to the lens. Use your opposite index finger to gently rub the lens on both sides. Step 2: Rinse the lens thoroughly big amount contact lenses. Step 3: Fill the lens housing with more contact lenses and place the cleaned and rinsed contact lenses into the appropriate compartment. Attach the lens barrel cap and repeat with other contact lenses.

Naturally, the lenses themselves, as well as all the accessories and care products necessary for them, will help you choose them in optical stores. For this purpose, each of them has a special consultant - an ophthalmologist. The salon will be able to help you put on and remove lenses for the first time, which will be a significant help in future wearing. But be that as it may, in the future, already at home, you will need to master the technique of independently inserting and removing contact lenses, and you need to know how to do it correctly for the first time.

Leave the contact lenses in the lens barrel for at least four hours. Preventing absorption into the solution will disinfect the contact lenses. Step 4: With the contact lenses in your eyes, pour the remaining solution out of the lens housing. Rinse the lens body with fresh solution and dry inner part outdoor housing.

Warning: Never use water to clean or store your contact lenses. Water does not contain the necessary contents for proper disinfection your contact lenses. In fact, cleaning your contact lenses with water can contaminate your lenses and is known to cause irreparable harm eye.

Reflex problem

One of the most big problems newbies to wearing contact lenses are our own unconditioned reflexes. In order to protect the eyes from damage, there is a special corneal reflex. When touched by anyone foreign body to it, the eyelids automatically close, helping to remove foreign bodies from the surface.

Safe use of lenses

If you wear daily disposables, you don't need to worry about storing your contact lenses as described above. However, if you drop the lens or get something in your eyes, you may need to clean it, in which case you should follow the procedure outlined in steps 1 and 2 above.

How long to wear lenses for

It is recommended that you wear glasses for several days a week to ensure your eyes receive more than enough oxygen to stay healthy. Long nose lenses can be worn while you are awake and sleeping for a week. However, it is important to understand that the recommended contact lens wear time depends on the type of lens and the wearer. Contact lens manufacturers provide wearing manuals for your lenses.

This reflex will be similar when trying to touch the cornea with a fingertip or the lens itself. To help you put on the products in the future, you can train your eyes a few days before you start using lenses.

With previously thoroughly washed hands and fingers, you can hold the eyelids open, and with the other hand, fingers, gently touch the sclera (the white membrane of the eye), thereby becoming accustomed to the touch. It is enough to perform such exercises for just a few days - the eyes will get used to the touch, and there will be no problems. serious problems when placing lenses for the first time.

When to see your optician

You should contact your optician if you. Feeling of discomfort Redness Excessive watering Visual disturbance. . We will do our best to help you. " Postoperative care" is the medical advice and advice you should be given after purchasing a pair of contact lenses. At a minimum, contact lens aftercare should include both guidance and assistance with organization.

Taking the product out of the packaging

Regular Contact Lens Exams Where You Can Go to emergency situation What signs or symptoms should you watch for? How to Remove Contact Lenses During an Emergency Who is your local contact for advice. Aftercare is provided by your optician and contact lens supplier.

How to prepare for the first time wearing lenses?

It is important before using lenses to inspect them for damage - the slightest defects on them (wrinkling edges, tears, scratches) will interfere with wear and can cause injury to the eyes. Such lenses need to be replaced with new ones. It is also important that not the slightest particles from the outside get on the lens, for example, lint from the towel with which you wiped your hands - they will actually be felt in the eye and injure the mucous membrane.

For dressing CL

Due to the sensitive nature of the eye, wearing contact lenses for the first time can be intimidating for some or even prevent some patients from switching. However, the vast majority of contact wearers can use them without problems after a week or two. Putting contacts in and out is another part of their daily routine, as well as the huge benefits of wearing contact lenses. The tips below will help speed up the process the first time you wear contacts, and they cover the periods before, during and after inserting and removing your contact lenses.

How to properly position lenses in the eye?

Only a correctly positioned lens, without defects, can be worn, and the main rule is to be careful. If this is your first time doing this, you should sit in front of a mirror at a table, in case you accidentally drop the lens from your hands. Having placed the lens on the index finger of the hand, with the thumb or middle finger of the same hand you need to push back the lower eyelid, and with the fingers of the other hand you need to push back the upper eyelid.

Before wearing contacts for the first time

Whatever your reason for purchasing contact lenses, this recommendation is correct - an eye exam is the most important step in this process. Your eye doctor will not only assess your vision needs, but will also determine the type and form of contacts you need based on the shape of your eyes and other health factors. Therefore, it is important to have this exam performed even if you are just considering or "over-the-counter" contact lenses. This may save you discomfort later on.

Looking straight ahead or lifting your eyes up (whichever is more convenient for you), place the lens just below the pupil line, after which you can slowly release your eyelids. Reflexively, when the eyelids close, the gaze drops down. In order for the lens to finally take its correct position, you can massage your eyes through a closed eyelid or blink your eyes. Using the same principle, the lens is put on the other eye with a cross change of hands.

Turning on contacts for the first time

The first thing that happens first is the lens inside out? The first thing you need to pay attention to is the brand name or inscription on the lens itself. If you can read the sign, then you're good to go. If there are no such labels, you will need to look at the shape of the lens when it is pointed down. If Bottom part The lens is rounded, your lens is correct.

After washing your hands, which is an extremely important step in the process, you'll want to rinse your lenses with a special solution. Excellent and should be used in combination with good rinse, but there is no replacement. After rinsing, hold the lens on your index finger. Use one hand to lift your upper eyelid up and your contact hand to hold the lower eyelid down, and while looking straight ahead, center the lens on the eye. Close your eyes, roll them up and blink until you feel completely comfortable.

At unsuccessful attempt, or if you dropped the lens, you need to rinse it in a special solution and try again.

How to properly remove lenses for the first time

  1. Each type of lens has its own wear period and must be removed at the end of the wear period. The procedure for inserting and removing lenses has one thing in common - your hands must be clean and dry.
  2. It is important to position yourself again in front of the mirror and remove the lenses in the same order in which you put them on.
  3. By spreading the eyelid wide with two fingers of one hand, you can see the edge of the lens. You can pick up the lens using the pinching method - with the tip of your index finger and thumb.
  4. Ladies with long nails should be extremely careful and use special tweezers. When removing lenses, make sure that the lenses are in their own container from your eye.
  5. The removed lenses are placed in a container filled with a special solution. You need to treat contact lenses as your doctor tells you. If these are daily lenses, you should simply throw them away after removing them.

How to properly put on scleral lenses for the first time?

Scleral lenses are much larger in size, and putting them on has its own characteristics - the lens must also be carefully removed from the container and placed on three fingers at once. Due to its large size, even two fingers will not be enough, too high risk falling of the lens and its damage.

Removing contact lenses for the first time

You have them, but they can't stay there forever! Wash your hands thoroughly and, while looking up or to the side, pull your lower eyelid down with one hand. On the other hand, gently pinch the lens, sliding it away from the surface of your eye. This, of course, applies to soft lenses. For hard lenses, consult your doctor about removal.

After Factoring and Caring for Your Contact Lenses

Caring for your contact lenses properly will help keep your eyes healthy, and opportunities to do so should be built into your daily routine. Keep your lenses clean using a combination of thorough rinsing and disinfection. Multipurpose solutions can often do both, but only if they're compatible with your specific lenses. Lens replacement is also necessary. While some lenses are only meant to be worn during the day, others can last up to a year. Make sure you stay on top of this because these lenses are made from different materials.

  1. In the future, the placement of the lens is not much different from the usual installation: with the index and middle fingers of the hand, the eyelids are moved apart as much as possible, the gaze is fixed straight ahead.
  2. When placing the lens, you need to ensure that the lens fully matches the eye, and then smoothly release the eyelids, closing the eye.
  3. To correct the position of the lens, you can pull down the lower eyelid and move it from side to side or up and down with your finger.

The second scleral lens should be put on in the same way.

Removing scleral lenses for the first time

To remove scleral lenses worn for the first time, it is necessary to pull back the lower eyelid as much as possible to expose the lower edge of the lens itself.

  1. To completely remove the lens, you need to pinch its exposed edge with your fingers or tweezers and gently pull it down, parallel to the plane of your face. This protects the mucous membranes and eyelids from damage.
  2. The removed lens must be placed in a special fresh storage solution in a container that matches the marking.
  3. The second lens is removed in the same way.

Scleral lenses need to be cared for just like other lenses. An optical consultant will tell you about the specifics of care.

Video - detailed instructions on how to put on contact lenses for the first time

Hand hygiene plays an important role in preventing pathogen transmission infectious diseases during lens installation. The hands of the person who plans to install lenses must be absolutely clean. They should be washed thoroughly with neutral soap under running water, rinsed and dried with a towel that does not leave lint.

The patient who uses contact optics, it should be remembered that there should be no traces of fat, cream soap or aromatic additives, creams and lotions on the skin of the hands. Cosmetics made from water based, have a significantly less impact on the quality of the lens, so people who wear it should use just such cosmetics. Contact lenses should be inserted before applying makeup. When using aerosol cosmetics, you must cover your eyes.

Another important advice: Always follow the instructions below and the advice of your ophthalmologist regarding lens insertion and removal, cleaning and disinfection, use and storage. Always follow the terms of wearing lenses that are indicated in the prescription or recommendations of a contact optician. In this case, you will not have any problems.

How to wear lenses correctly

In order not to confuse the lenses, you should develop the habit of starting their installation with either the right or left eye. Place the lenses in front of the mirror, while tilting your head forward and looking into the distance. The following sequence must be followed when installing lenses:

  • First, carefully remove the contact lens from the blister.
  • Inspect it and make sure that there is no visible damage to the lens: tears, wrinkled areas along the edges. A damaged lens should not be used. It's better to throw it away and use new packaging.
  • To make sure that the inner surface of the lens is not turned outward, you can do this: on the pad index finger put the lens down and inspect it carefully. Lens in in good condition resembles a bowl, the edges of which are turned upward. If you see that the lens looks like a plate, the edges of which are curved outward, then this means that it is inside out.
  • Pull the upper one towards the eyebrow with the first finger of your left hand in such a way that it does not cover the eye even while blinking.
  • Place the lens on the pad of the second finger of your dominant hand, bring it to the eye and pull down the lower eyelid with the third finger. Place the contact lens on.
  • Make sure the lens is positioned correctly on the eyeball and remove your finger. To correct the position of the lens, look down at your eyes.
  • Close your eyes, turn them in different directions and blink several times.
  • Install the lens in the second eye in the same sequence.

Contact lenses are usually firmly placed on the cornea of ​​the eye and rarely move towards the sclera. If you find that displacement has occurred, carefully move the lens with your eyelids open. the right direction pressing on the edge of the lower or upper eyelid.

pay attention to next moment: Use a fresh, sterile solution to rinse the lens before inserting it. If you feel that the lens is not moving in the eye, apply a special moisturizing solution. Never use tap water to rinse contact lenses.

Video on how to properly put on and remove lenses

How to remove lenses correctly

You should always remove the lens that you installed first. You must follow the same hygiene rules when removing a lens as when installing it.

You can avoid microtrauma to the cornea when removing the lens by using a pinch technique. If you decide to use it, stand near the mirror, as when installing the lens, tilt your head forward and look up. Then perform the following movements:

  • With the second finger of your hand, move the contact lens down onto the sclera.
  • squeeze it carefully with your first and second fingers, pull it forward and remove it.

Putting on and taking off contact lenses is much easier than you think. It will take a little time to learn, but then you will be able to handle these vision correction products without difficulty, and the question “How to put on and remove lenses?” will disappear.

How to put on lenses?

For many people who wear contact lenses, putting them on becomes a routine task. But for a beginner who has just bought lenses from an optician, putting them on his eyes can sometimes be extremely difficult. Therefore, we will now give you valuable recommendations on how to put on lenses, following which, after just a few days, you will fully adapt to this process.

Even those people who resort to using lenses for the first time in their lives quickly master the technique of putting them on.

General cold. During flu, sore throat or other similar diseases When the nose and eyes are running, the lenses should also be temporarily replaced with glasses.

In order to quickly and correctly put on lenses without confusing them, it is best to try and develop a habit. You must always start with the same product for a specific eye.

Myth: Nothing bad will happen if I wear my lenses longer than prescribed. The quality of vision still does not change, but you can save a good amount.

Truth: Since the lens is in direct and extremely close contact with the surface of the eye, any, even the most insignificant change in its condition poses a threat to the cornea. That is why you cannot independently extend the prescribed service life of lenses - it is calculated by specialists based on the properties of the material from which the lens is made, its shape, humidity, and gas permeability. Strict adherence to the prescribed period of wearing lenses allows you to avoid damage caused by plaque that appears on their surface.

A significant part of the reviews about lenses are messages about problems with putting on contact correction products. This is what gave rise to the idea of ​​​​the difficulty of wearing lenses. Of course, it cannot be said that any person can place a lens on the surface of the cornea without any difficulty; it is errors when putting them on that often cause harm to contact lenses and provoke a negative attitude towards them. But with the desire, willingness to learn, the help of an ophthalmologist and following the recommendations, putting on lenses will very quickly turn into an automatic procedure.

Gently insert the lens into the eye. Make sure it is centered on your iris (the round colored part of the eye), moving it gently across your eyeball if necessary.

To insert a contact lens with both hands, use the middle finger of your left hand to pull your right upper eyelid upward. The middle finger of the right hand is located near the eyelash line of the lower eyelid and gently pulls the eyelid down. Using the index finger of your right hand, the lens is carefully applied to the eyeball. Without letting go of your eyelids, you need to look down so that the lens rests exactly in the center. Then you should blink several times and repeat the operation with the other eye.

Well, in conclusion, as a bonus, you will learn -

How to put a lens on another person's eye?

For beginners who are putting on lenses for the first time, it is recommended to keep their nails cut short to avoid damaging the eye or the lens.

How did you put on the lens for the first time? It was scary? How much time did you spend on this?

Have you read this?

Contact lenses – selection of contact lenses

If you have decided to switch from glasses to contact lenses, then the first thing you should do is visit an ophthalmologist and undergo an appropriate examination to avoid problems with the health of your eyes. Glasses or lenses - pros and cons. What types of contact lenses are known, and how to choose them correctly?

Rating of 10 things harmful to vision

What is harmful to the eyes, and what are the main causes of visual impairment? Why shouldn’t you look at welding, is wearing contact lenses harmful, how does smoking affect your vision, is piercing dangerous for your health? Rating of 10 objects and phenomena that negatively affect our vision.

But you did it differently, you put on glasses, even the weakest ones. What happened? See: You really have become better, but you have completely blocked the work of the extraocular muscles:

Motherhood, Relationships, Beauty and Fashion

I have good vision, but I would like to slightly emphasize my eye color with colored lenses. What do you have to say about this? Is it harmful to wear them? How does it feel?

Contact lenses are considered to be for adults. It is believed that adults wear colored lenses more consciously. It is believed that teenagers cannot take care of their eyes and lenses like an adult and independent person.

Where and how to choose contact lenses for your eyes

Contact lenses - medical device, intended for vision correction and suitable for a specific person in accordance with unique shape his eye. That is why only a specialist can choose the right lenses.

If you want to know how to choose contact lenses, check out the step-by-step instructions below.

Change eye color by force of will. / page 8

And now we’ve gotten to the most important and magical part!

If you have Brown eyes, but there is a dream about blue or blue ones, you can buy not clear lenses by choosing the color you like. Then the natural eye color will not be noticeable. To make your own eye color richer and brighter, you can use clear lenses. Then, for example, green eyes will acquire an emerald tint. There are unusual decorative lenses with which you can change not only the color of your eyes, even red, but also make them striped and speckled. But before purchasing lenses, you need to consult with an ophthalmologist so as not to harm your eyes due to incompetence.

Comments on the article How to quickly learn how to put on contact lenses:

How to put on lenses correctly: nuances of the procedure and care

Anyone who decides to use them wonders how to put on lenses correctly. This correction option is quite tempting. It is completely invisible and does not require wearing glasses. But there are nuances related to basic visual hygiene, and some to the design of the product. And, of course, it wouldn’t hurt to have basic information that will help you better understand what kind of optics it is.


Are you wearing lenses for the first time?

Read the tips on how to properly wear lenses for the first time and try to follow them completely if eye health is important to you.

  1. The main thing you need to take care of is the cleanliness of your hands. It is advisable to wash them with fragrance-free antibacterial soap, rinse thoroughly and wipe dry.
  2. Your lenses for your right and left eyes are probably different. The habit of always starting to put on and take off the optics from the same pupil (right or left) will help you avoid getting confused.
  3. Before putting it on, you must make sure that the product has not turned inside out. To check, hold it up to the light on your fingertip. Curved edges indicate incorrect position, smooth - can be worn.
  4. When putting it on, hold the upper eyelid with your free hand, not allowing your eye to blink, and pull down the lower eyelid with the free finger of the hand in which you are holding the lens.
  5. With calm and confidence, bring it to the pupil. It is usually easier to carefully insert the lens if you are looking up.
  6. Once placed on the eyeball, gently release your eyelids and close your eyes briefly to allow the lens to slide into place.
  7. Repeat the same with the other eye.

To understand the procedure more thoroughly, we recommend watching the video below: how to put on lenses?

The main obstacle that can stand in the way of perfect vision without glasses is the fear of touching the eyeball. If you are responsible for hand hygiene and have selected a completely suitable set, there will be no consequences. Doctor Lens specialists will help you correctly determine what is suitable and give qualified advice on how to wear lenses correctly.

Leave a request for selection of contact lenses
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girls, once again about contact lenses, if you can’t double the topic, then I apologize in advance.
The thing is that I already received the lenses, I found a store and tried to put them on today and couldn’t.

We agreed to try again without makeup.

The thing is that he explained it to me, but I understood very little German. I'm especially interested in how to remove them. and what if I can’t take it out. he seemed to say that it was dangerous or bad

but what to do then? I need to know this so as not to be afraid to wear them at all

You need to take them out, as if you were an eyelash or a speck, with a clean finger, without pressing too hard, you hit the lens with your finger and carefully move it towards your nose, there are generally no problems with removing them

Katya, thank you, and then what? Does it fall out on its own or do you have to grab it with your fingernail and pull it out?

then how to dress. he explained it to me, but I didn’t understand it in German. I only visually understood how he showed how to open the eye. Then I seemed to have already put this lens in my eye and didn’t even blink, but. I take my finger out, but it remains on my finger

Maybe you need to press it down, or what to do to keep it in your eye.

further, when you almost took out the lens with your finger, you help yourself with another finger of the same hand, grab it and take it out, it’s simple, you yourself will understand everything in meaning, if so, go to any optician, they will help you, then, if the lens was worn daily, you just throw it away and that’s it, and if it’s for a month, then you take a container, then pour in the solution, put the lens in there, and forget about it until the next time you wear it.
How to wear it depends again on what kind of lens you have, daily or monthly wear, read and write

These lenses are either for a week or a month, but definitely not for a day. I don’t remember just exactly, I asked him about trial version and he said something about the week - I still don’t understand.

and the lenses themselves are still in the store, they have no right to give them to me until I put them on and take them off in front of them.

Albinka, so they themselves will show you how to put it on and take it off :)
luxuryeyes.ru/articles/kak-odevat-kontaktnie-linzi_32.php here is a comprehensive video

at the beginning of the line you need to write http://

This is the first video that I came across on the request to remove and put on lenses, if anything is still not clear, try looking for the video, it’s more clear

So I write what they show me, but I have a problem with the language - I don’t understand, I visually repeat after him, but what to do, maybe what nuances and why the lens remains on the finger, how to leave it in the eye - I don’t understand.

and the faster I understand and do it, the faster I will receive the lenses. And I like to learn from trusted people, or rather, verified information: I don’t trust all the information. there is a lot of falsehood on the Internet, I am well aware of this due to my work

and thanks for the video, I’ll watch it and try to understand.

interesting, it says there that you need to pull back the lower eyelid, but he showed me that to pull back the upper and lower. and also, here it is shown that she is, as it were, dressed from below - is this correct?
Maybe this is my mistake: I tried to place it directly, or probably even starting from the top.

probably about retracting the eyelid is not important, whatever is convenient for you, I also retract the lower one, not the upper and lower ones, it seems to me that this is unimportant, I think they will show you if it is uncomfortable for you or does not work out the first time, the lens happens, that it seems to have gotten dressed, but in fact remains on your finger, try again, maybe you don’t need to press so hard, you need to try until it works.
I wear it either from below or clearly straight, I have never worn it from above.
Look clearly at how they show you, they don’t tell you anything interesting, just watch, don’t listen, I watched this video, everything is exactly as they say.
The lens should remain in the eye, but it seems to be twisted onto your finger, as an option. Take the lens carefully, when you insert it into your eye, try to blink, maybe if it sticks a little to your finger, the lens will move away and go straight into the eye, sometimes air gets under the lens, you don’t need to remove anything, just blink

thank you very much, I hope everything will work out soon, well, it’s probably a matter of habit and over time they get put on and taken out, I hope, without stress, just once or twice

Quote(kate121280 23.1.2015, 14 01)

if for a month, then you take a container, then pour the solution, put the lens in there, and forget about it until the next time you wear it.

I usually rinse the lens first. I pour a little solution for storing lenses into my palm and place it removed lens there and gently wipe the lens with the pad of my finger. And then into the container.

Quote(Albinka 23.1.2015, 14 37)

Another question is, can you wear them with painted eyelashes or is it really a hindrance?

I don’t know if it bothers me or not, but I get a little teary-eyed when I put on the lenses. Therefore, lenses first, and then makeup.

Quote(Albinka 23.1.2015, 14 51)

Maybe there are some nuances and why the lens remains on the finger, how to leave it in the eye - I don’t understand.

There is no need to put too much pressure on the lens or press it too hard against the eye. In this case, the lens turns out and sticks to the finger. You just very lightly, gently apply the lens to the eyeball so that the edges stick to it.

By the way, I also find it more convenient to put on lenses without a mirror. So I don’t see, but I FEEL what I’m doing.

Quote(Albinka 24.1.2015, 22 42)

Thank you very much for the advice, Lucy

I have another question: can you wash your face with lenses without any problems?
Do you feel the lenses on your eyes or are there no problems at all?
In the morning, do you wash your face first and put it on, or do you just wake up and need to put it on right away?
How long do you wear it, can you wear it without a break? and it doesn't affect the eyes in any way?

Cheers, Albin

I have never felt any discomfort when washing with lenses. But I think it may be individual.
In the morning, you need to wash your face first. Wash off the night dirt, and then the lenses. And this absolutely does not mean that lenses must be inserted immediately after washing. Whenever is more convenient for you. For example, I wear glasses around the house in the morning. And when I’m about to put on makeup, I go for lenses.

I can’t answer the last question, because I feel more comfortable wearing glasses. I wear lenses on holidays.

Why is it more comfortable with glasses?

Quote(Albinka 24.1.2015, 23 27)

Why is it more comfortable with glasses?

My eyes are sensitive. I can feel dirt on my lenses very strongly. This is especially true for tobacco. Someone nearby at the bus stop smoked or went into some public toilet, where it is smoky, and the lenses immediately begin to cause discomfort. Then I can’t wear them until I clean them with enzyme tablets. But of all my friends who use lenses, I am the only one who has this problem. Half of the people I know with lenses smoke - and nothing happens

Tell me, which lenses are better, daily or hydrogel?
I decided not to wear glasses.

How to remove and put on contact lenses for the first time: video tutorial

Every person who is going to use contact lenses for the first time has many questions about how to properly put on and take off these products. Regardless of what your goals are - vision correction or just a change of image - you must follow the rules that will help you avoid various problems related to the use of eye lenses.

Hand hygiene is the most important factor

Despite the fact that instructions for putting them on are given in the salons where they are sold, for many people this still remains an impossible task. You can simplify it if you follow detailed instructions for those who use lenses for the first time.

Detailed step-by-step installation instructions

If you are putting on lenses for the first time, watch our video on how to put on lenses correctly

How to put on ACUVUE ® lenses (video)

To avoid infection, be sure to wash your hands before putting on your lenses.

Detailed instructions on how to put on lenses

After you wash your hands, be sure to wipe them dry. At the same time, you need to pay attention so that there is no lint left from the towel on your hands. Even the smallest lint can cause you pain and nuisance.

2. Take the lenses out of the container. The lens container usually has two compartments that are designed to store the right (R) and left eyepiece (L), respectively. For convenience, some manufacturers mark the equal cover with a different color.

4. Hold your eyelid and insert your contact lens.

Use your free hand to hold your eyelid and insert the lens. Many people try to look to the side when inserting a lens into the eye. You can also look to the side or look at the lens.

5. Blink and smile - you have a lens for weeks!

  • Place the lens on the pad of your right index finger. At correct location lenses, it should resemble a bowl in shape, and its edges should be directed towards the top. If the lens is turned inside out, it will resemble a plate, and its edges will be turned outward.
  • The next step to putting on contact lenses is to pull the upper eyelid with your finger towards your eyebrow so that it does not cover your eye, even if you blink.
  • Place the contact lens on the pad of your right index finger, and with the middle finger of the same hand, pull down the lower eyelid. Then place the lens with your index finger on the sclera, that is, under the cornea of ​​the eye.
  • Once you are confident that the lens has been successfully placed on the eye, you can carefully remove your finger. To accurately position the lens, lower your eyes downwards.
  • Now close your eyes and rotate them under your closed eyelids. Blink.
  • Perform the same manipulations when installing the lens on the second eye.
  • Carnival contact lenses can be either corneal (that is, worn on the cornea of ​​the eye) or scleral.

    Manufacturers of carnival lenses never cease to amaze consumers with their imagination. Now you can buy lenses with images of emoticons, cat pupils, cobwebs, sports symbols, flames, soccer balls - in general, you can’t list everything.

    Black scleral lenses are used to create spooky images during Halloween celebrations, themed parties and carnivals, since there can be no other impression when looking at a character whose eyes are impenetrable black hemispheres.

    White scleral lenses, seen for the first time at some fun holiday, can be seriously frightening, since this is a sight for people with strong nerves.

    Scleral lenses that enlarge the eyes are also not a means of vision correction. Their purpose is limited only to creating a decorative effect. When wearing such lenses, the eyes visually increase in size by almost 1.5 times. The popularity of such lenses was greatly facilitated by the famous video featuring Lady Gaga, who during filming wore lenses with the effect of enlarging her eyes.

    Requirements for decorative lenses

    Despite the fact that the use of carnival lenses is of an entertaining nature, they are subject to the same requirements as vision-correcting lenses:

  • To purchase theater lenses, a prescription is required, and it is necessary even for people whose vision does not need correction. The fact is that when selecting contact lenses (in addition to visual acuity), other parameters are also taken into account. For example, the radius of curvature of the cornea and its diameter, which can only be determined by a specialist.
  • If your attempt is unsuccessful, or if you drop the lens, you need to rinse it in a special solution and try again.

    How to properly remove lenses for the first time

    1. Each type of lens has its own wear period and must be removed at the end of the wear period. The procedure for inserting and removing lenses has one thing in common - your hands must be clean and dry.
    2. It is important to position yourself again in front of the mirror and remove the lenses in the same order in which you put them on.
    3. By spreading the eyelid wide with two fingers of one hand, you can see the edge of the lens. You can pick up the lens using the pinching method - with the tip of your index finger and thumb.
    4. Ladies with long nails should be extremely careful and use special tweezers. When removing lenses, make sure that the lenses are in their own container from your eye.
    5. The removed lenses are placed in a container filled with a special solution. You need to treat contact lenses as your doctor tells you. If these are daily lenses, you should simply throw them away after removing them.

    How to properly put on scleral lenses for the first time?

  • Fill the container with a special solution for cleaning lenses.
  • Dissolve one enzyme tablet in each cell of the container. (Ask your doctor for details and dosage)
  • Immerse washed and cleaned lenses in this solution. The time spent in a solution of lenses with a moisture content of up to 42% is no more than 10 hours. For lenses with moisture content up to 75% - no more than 30 minutes.
  • After the time has passed, remove them from the solution, clean and rinse with a clean solution.
  • Discard the remaining used solution and wash the container.
  • Fill the container with regular, clean lens cleaning solution.
  • Immerse them in the solution for at least 4 hours.
  • Now you can use them.
  • Features of colored lenses

    If you wear colored contact lenses, there are some special considerations here. Colored lenses with backing are stored in saline solution, and weekly cleaning is done this way.

    By following the given tips on how to put on and remove lenses, you will very quickly learn how to perform these daily manipulations correctly. Treat your lenses with care, because your well-being depends on their condition. For more information or advice, it is better to contact an appropriate specialist.

    If you have poor eyesight, but do not want to wear glasses, ideal solution will become contact lenses. To ensure that the first use does not leave an unpleasant aftertaste, you must clearly know and follow several elementary rules. They will help an inexperienced user figure out how to put on and remove lenses for the first time. Anyone starting to use contact optics has probably encountered similar problem. Of course, an experienced user may think that this simple procedure, the implementation of which should not raise any questions and does not require advice or recommendations experienced specialists. Ophthalmologists say that putting on lenses correctly for the first time is beyond the power of most people. The problems are largely due to the fact that the eyelids can close at a reflex level, as well as the fact that the user himself may be overly afraid that the putting on process will cause discomfort to the eyes and even cause injury visual organs. Beginners can spend about two hours figuring out how to properly put on lenses if they have previously worn glasses or have not used contact lenses at all. Moreover, the result was not always satisfactory. Many users admit that they have damaged more than one pair of lenses before understanding how to use them correctly. And this is despite the fact that in optical stores, when the buyer purchases the first pair, the specialist explains in detail how to correctly put on the lenses for the first time so that they do not cause discomfort during use. Besides, detailed instructions, as a rule, is attached to the packaging and by the manufacturer who produced this or that model of optical products.

    Checking lenses before wearing

    The first thing you need to do before putting your contact lenses in is wash your hands. As a rule, this must be done in order to avoid infection. It is best to use neutral acid soap for this purpose. You should dry your hands with a lint-free towel so that there is no lint left on your fingertips when touching the lenses. You should not use paper towels for this, since when in contact with water, the paper loses its strength and can tear, and small pieces of it, invisible to the eye, can remain on your hands and, when put on, get on the surface of optical products. If necessary hygiene procedures are met, remove the lenses from the blister in which they were located from the moment of purchase. It is best to do this using special tweezers with silicone tips. You can purchase ophthalmological products such as contact lenses at opticians or specialized online stores. If you are going to put on contact lenses for the first time, then pay attention to the fact that optical products have certain markings on their surface. So, on one of them there is the letter “R”, and on the second - “L”. What does this mean? Knowledgeable English language, you may have already guessed that the lens marked with the letter “R” is intended to be worn on the right eye (“right” - right), and the one marked with the letter “L” - on the left (“left” - left). In order to put on the lenses as comfortably as possible, place them on the pad of your index finger. Of course, do this action It is necessary first with one lens, and then with the other. Before placing it on your cornea, inspect it carefully. Check to see if it is bent? It's important to know that optical product, having the correct shape, should have the shape of a bowl, the edges of which look up. If it visually resembles a plate with flattened edges, then you should absolutely not wear such a lens. What to do in such a situation? Is it possible to correct its shape yourself or should these correction tools be disposed of? Ophthalmologists believe that it is possible to wear such contact lenses. However, before you put them on, you need to give them their original shape. You can do this yourself by turning out the edges of the product. Of course, such advice may seem strange to an inexperienced user and its implementation impossible. However, as you know, everything comes with experience. To clearly understand how to do this, you can watch videos on the Internet, available for the query “how to put on lenses for the first time.” Next, you need to make sure that contact optics has no damage. Take a closer look at the lenses you plan to wear in the near future. Are there any small cracks or fluff on their surface? If you notice mechanical damage, then such optical products should be disposed of. Wearing them is strictly not recommended, as their use can seriously harm the mucous membrane of the eye.


    Accessories to wear

    We have already said earlier that the modern optics market offers a wide range of special accessories that make it easy to put contact lenses on your eyes. First of all, these are tweezers. This accessory is considered the most popular today. Firstly, it is easy to find on sale, since tweezers are wide range presented in opticians and on online shopping sites. Secondly, in their reviews, users highly note the benefits of using this accessory, recommending that all those who do not know how to put on lenses for the first time purchase it. Thirdly, their cost is very affordable. Despite the fact that the price of tweezers may vary depending on the manufacturer, anyone can purchase them today. Our online store Ochkov.Net presents tweezers designed on the basis of silicone, plastic, and with rubber tips, which greatly facilitate the process of putting on contact lenses. Huge selection tweezers are presented today by the Asian company Kaida. The products developed by its specialists are distinguished by a stylish and bright design that instantly attracts attention.

    Another practical device that is just gaining popularity is a suction cup. It was designed to make wearing lenses comfortable not only for experienced users, but also for beginners. Initially, the suction cup was created so that users could quickly get used to how to put on lenses for sleep, or, as they are also called, orthokeratological lenses. This accessory is a rod with a suction cup tip made of silicone material.


    Reflex problem

    One of the most common problems faced by those users who do not know how to put on lenses for the first time is unconditioned reflexes. human body. Ophthalmologists distinguish the corneal reflex, the main task of which is to protect the visual organs. When any foreign body touches the cornea of ​​the eye, the eyelids instantly close, helping to remove the foreign body from the surface of the cornea. This reflex will be similar if, at the moment when putting on contact lenses, you touch the cornea with the pad of your finger. Ophthalmologists recommend that their patients try to train their eyes for the first time before putting on lenses. You can try the following exercise - with thoroughly washed hands, hold your eyelids open, and with the fingers of your other hand, gently touch the sclera - the white membrane of the eye. Before performing this exercise, make sure that your nails are cut short so that they cannot harm the cornea of ​​the eye. If you perform this exercise several times, an addiction will form, which will allow you to put on the lenses painlessly the first time, and all subsequent times.


    Differences in putting on corneal and scleral lenses

    Recently, scleral contact lenses have become very popular among modern buyers. These optical products completely cover not only the iris, but also the sclera itself - the white part of the eye. They are widely used in cinema to create various frightening images and are often used for photo shoots or themed parties. However, these optical products were invented for the correction of ophthalmic pathologies, such as keratoconus, aniridia, microphthalmia and many others. Due to such widespread use of this model, the question of how to put on scleral lenses for the first time is very relevant. Scleral lenses are different large size than the corneas that are familiar to many, and therefore it will not be possible to hold them with one finger. In order to make wearing scleral lenses as comfortable as possible, it is necessary to use three fingers simultaneously when putting them on: thumb, index and middle. Dressing them like corneas will not work, since the eyelids will need to be spread as wide as possible. At the moment of contact of the lens with the surface of the cornea, you must look straight, otherwise the optical product may move and cause discomfort during use.